Pencil-sharpener



(No Model.)

' H. A. BLANGHARD.

PENOIL SHARPENEB.

No.304,9 00. Patented Sept. 9, 1884.

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HELEN A. BLANGHARD, OF BOSTON, MASSACHUSETTS.

PENCIL SHARPENER.

SPECEFICATIQN forming part of Letters Patent No. 304,903, datedEteptember 9, 188

Application liled March 3], 1884.

To all whom it may concern:

Be it known that 1, HELEN A. BLANOHARD, a citizen of the United States,and a resident of Boston, Massachusetts, have invented cortainImprovements in PenciLSharpeners', of which the following is aspecification.

The object of my invention is to construct a simple, cheap, andeffective device whereby a the action of part of the device, and Fig. 7a

side view illustrating a modification of part of the invention.

Aisa frame or standard, to the'base of which is secured, by casting orotherwise, a projecting screw-stem, 0, whereby said standard can besecured to a table, desk, or other convenient support, or a clamp orequivalent fastener may be substituted for the screw, if de sired. Thestandard has at the upper end two arms, b and d, on the former of whichis a bearing, a, for a shaft, f, having at the outer end a crank, f, andat the inner end a disk, 13, and

a conical cutter, D, of a construction common in pencil-sharpeners, andhaving an inclined knife, 9, which, however, is not secured inpositionin the cutter-casing, butis adapted to a slot, in which it can beadjusted by set-screws h h and locked in position by set-screws or oneadjusting-screw and one locking'screw only may be used, if desired. Thecutter D hasa threaded tubularstem, m,which is adapted to athreadedopeningin the end of the shaft f, and between the disk B and a shoulder,12., on the cutter is secured a disk, F, of sand or emery paper or otherabrading material, which may also be cemented to the disk B, ifadditional security is desired; or the disk B itself may be roughened.The arm I) is bent out over the disk B' at the upper end, and to thisportion of the arm is secured abar, G, in the upper portion of which isformed a conical socket, p, the lower end of the bar being bent (Nomodel.)

so as to overlap the edge of the disk 13 and serve as a guard, as shown.

To the end of the arm d of the standard Ais secured a stem, l-i,thesecuringbolt (1 being adapted to a vertical slot, q, in the stem, soas to permit vertical adjustment of the latter,

and a lug, s, on the arm (I being adapted to a groove, 2, in the stenninorder to guide itdun ing its movement and prevent its deflection to oneside or the other. The stem has at its upper end a grooved bar, 10,serving as crest for the pencil which is being sharpened, and insuringthe presentation of the end of the same exactly in the center of thecutter D, the adj ustment ofthe stem H adapting the instrument for thesharpening of pencils of different diameters. .he pencil being thussupported, the end of the same is thrust into the cutter and the woodensheathing of the lead is removed by the knife 5, so as to reduce saidsheathing to a taper corresponding to that of the cutter, the knifebeing so set, howevcr, that it will not act upon the lead, the latterprojecting into or through the hollow stem at of the cutter. When thewooden sheathing has been sufficiently removed, the penciliswithdrawnfrom the cutter and the projecting lead sharpened by subjecting it tothe action of the cutting or abrading' disk F. During this operation thepencil may be supported by the guard G; or, if a fine point is desired,theend of the pencil is inserted into the conical socket p, which servesto direct the lead to the abrading-disk at the proper angle.

By the adjustment of the bar G on the arm I), so as to regulate thedistance between the socket p and disk F, a long or short point may beproduced, as shown in Figs. 5 and 6. If 'a round point is desired, thepencil should be rdtated while it is being subjected to the action ofthe disk 1*; but if a ila-t point is to be formed the pencil may be heldin one position until the lead is flattened on one side,and thenreversed sons to flatten it on the opposite side.

The instrument is preferably provided with a tray, M, for the receptionof the shavings and powdered lead resulting from the opera -tions abovedescribed, this tray being suspended by hooks a: from lugs y on the armI) in such a manner that it can be readily removed when it is desired toempty it.

The abovewlcscribcd instrument can be manufactured at a comparativelylow cost, and will effect the removal of the wooden sheathing of thelead and the pointing of the latter without waste and without soilingthe fingers, clothing, or surroundings of the person sharpening thepencil; and owing to the fact that the knife 9 and disk F areinexpensive, and can be readily removed and replaced by new ones whenworn out, the instrument can be kept in effective working order withouttrouble and at slight expense.

If desired, friction, belt, or spur gearing may be used in order todrive the shaft fat a higher rate of speed than is possible when thecrank is connected directly thereto. An arrangement of this character isshown in Fig. 7.

I claim as my invention 1. The combination, in a pencil-sharpener, of aframe or standard, a shaft, f, adapted to bearings therein, and acutter, D, and abrading-disk secured to and turning with said shaft, asset forth.

2. The combination of the frame or standard, the shaft f, itscutterD,and the pencil-support w, concentric with the cutter, asspecified.

.3. The combination of the standard A, having a lug, s, the stem H,having a recessed bar, 20, slot q, and groove 16, and the confining-boltq, as described.

4. The combination of the standard A, the tubular shaft f, and thecutter D, having a tubular threaded stem, m, adapted to said F, and thecutter D, having a screw-stem, m, adapted to an opening in the end ofthe shaft f, and a shoulder, a, whereby the disk F is confined to thedisk B, as specified.

6. The combination of the standard A, the shaftf, having anabrading-disk, F, and the bar G, located in front of said disk and bentat the lower end so as to form a pencil-support and overlap the edge ofthe disk to serve as a guard, as set forth.

7. The combination of the standard A, the shaft f, having anabrading-disk, F, and the bar G, forming a pencil support an d guard,and having formed on it a pencil-guide, 1 ,adj acent to the flat face ofthe disk, as set forth.

8. The combination of the standard A, the shaft f, having a disk with aflat abrading side, and the pencil-supportp, adjustable from and towardthe flat face of the disk in a course at right angles to said face, asset forth.

9. The combination of the cutter D with the knife 9 and the adjustingand locking screws h and i, as specified.

10. The combination of the standard having I HELEN A. BLANGHARD.

\Vitnesses:

JOHN M. CLAYTON, HARRY SMITH.

